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首页> 外文期刊>The Indian Journal of Agronomy >Methods of cotton (Gossypium hirsutum) establishment and zinc fortification in cotton-based cropping systems: Direct and residual effect on onion (Allium cepa) and system productivity of cotton-onion cropping system
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Methods of cotton (Gossypium hirsutum) establishment and zinc fortification in cotton-based cropping systems: Direct and residual effect on onion (Allium cepa) and system productivity of cotton-onion cropping system

机译：基于棉花的种植系统中棉花（陆地棉）的建立和锌强化的方法：对洋葱（洋葱切洋葱）和棉花-洋葱种植系统的系统生产力的直接和残留影响

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摘要

A field experiment was conducted during rainy (kharif) and winter (rabi) seasons of 2013-14 and 2014-15 at New Delhi, to evaluate the effect of 2 methods of cotton establishment (direct sowing and transplanting) and 5 zinc-levels (control, 2.5, 5.0, 7.5 kg Zn/ha and 0.5% zinc sulphate foliar spray at 60 and 90 days after planting) on cotton (Gossypium hirsutum L.) and their residual and direct effect of 5.0 kg Zn/ha in place of foliar treatment on the succeeding wheat [Tri ticum aestivum (L.) emend.Fiori & Paol.] and onion (Allium cepa L.) crop. In this research paper residual effect of treatments applied to cotton and direct effect of Zn on onion has been presented along with system productivity and resource-use efficiency. Productivity of cottonand onion was higher during 2013-14 than 2014-15. Onion recorded significantly higher economic parameters and nutrient uptake after transplanted cotton than direct sown. Onion produced statistically similar growth and yield attributes, bulb yield, grossand net returns and nutrient uptake, due to direct application of 5.0 kg Zn/ha and residual effect of 5.0 and 7.5 kg Zn/ha to cotton, which were significantly superior to control and residual effect of 2.5 kg Zn/ha. Based on 2 years average, gain in netreturns was RUS 40,350, RUS 43,200 and RUS 47,950/ha due to residual effect of 5.0/7.5 kg Zn/ha and direct effect of 5.0 kg Zn/ha over control. Both residual and direct effect of Zn found to enhance the quality of bulb in terms of Zn enrichment and on anaverage 32.0, 31.8% and 36.2% increase in Zn uptake was recorded due to residual effect of 5.0/7.5 kg Zn/ha and direct effect of 5.0 kg Zn/ha respectively. Based on 2-years average, system productivity in terms of seed cotton equivalent yield (9.45 t/ha), production efficiency (27.0 kg/ha/day), economic efficiency (736.9RUS /ha/day) and irrigation water productivity (1.16 kg/m~3) of transplanted cotton-onion cropping system was significantly greater than the direct sown cotton-onion system. Successiveincrease in Zn-levels caused significant increase in system productivity, production efficiency, economic efficiency and irrigation water productivity up to application of 5.0 kg Zn/ha. So based on the study it is concluded that in Bt cotton-onion cropping systems 5.0 kg Zn/ha to Bt cotton is sufficient to meet the zinc requirement of both the crop and transplanted cotton is better than direct sown cotton.
机译：在新德里的2013-14和2014-15雨季（kharif）和冬季（rabi）期间进行了田间试验，以评估2种棉花种植方法（直接播种和移栽）和5种锌水平（在种植后60天和90天分别对2.5、5.0、7.5公斤锌/公顷和0.5％硫酸锌叶面喷施棉花（Gossypium hirsutum L.）进行对照，并以5.0公斤锌/公顷代替叶面残留和直接作用对随后的小麦[Tri ticum aestivum（L.）emend.Fiori＆Paol。]和洋葱（Allium cepa L.）作物的处理。在这篇研究论文中，已经提出了棉花处理的残留效应和锌对洋葱的直接效应，以及系统生产力和资源利用效率。 2013-14年期间，棉花和洋葱的生产率高于2014-15年。与直接播种相比，洋葱在棉花移植后的经济参数和养分吸收显着提高。由于直接向棉花施用5.0 kg锌/公顷以及对棉花的5.0和7.5 kg锌/公顷的残留效应，洋葱在统计学上具有相似的生长和产量属性，鳞茎产量，总收益和净收益以及养分吸收状况，这显着优于对照和对照。残留效应为2.5 kg锌/公顷。根据两年的平均水平，由于残留控制量为5.0 / 7.5 kg锌/ ha和直接影响为5.0 kg Zn / ha，净收益的增加为RUS 40,350，RUS 43,200和RUS 47,950 / ha。发现锌的残留和直接作用都可以提高鳞茎的品质，提高锌的富集度，并且由于5.0 / 7.5 kg锌/公顷的残留效应和直接效应，平均锌吸收量分别增加了32.0、31.8％和36.2％。分别为5.0 kg锌/公顷。基于2年平均值，以籽棉当量产量（9.45 t / ha），生产效率（27.0 kg / ha / day），经济效率（736.9RUS / ha / day）和灌溉水生产率（1.16）表示的系统生产率kg / m〜3）的棉花洋葱种植系统明显大于直接播种的棉花洋葱系统。锌水平的连续提高导致系统生产力，生产效率，经济效率和灌溉水生产率显着提高，直至施用5.0 kg锌/公顷。因此，根据研究得出的结论是，在Bt棉洋葱种植系统中，种植Bt棉的锌每公顷5.0 kg锌足以满足作物对锌的需求，而移植棉优于直接播种棉。

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